I always wanted to have a full team of glitch Pokemon:
Ash is wading along the beach on cinnabar island when suddenly he falls over onto the hard ground. Bright light comes from all around as he looks up in shock to see a strange emtpy wireframe space.
As he gets up, a piercing noise shatters the silence, it seems to come from inside his own head. A shadowy, pulsating form fades and crackles into view. An 'arm' extends and throws a ball, completely black like a void. Exploding from within is a pokemon...? No It can't be! Ash stares wild eyed at the strange rectangular form, a chunk missing in its top right corner. It shrieks as it ripples with strange patches of incomprehensible randomness.
Ash's vision flashes for a moment back to the beach, he's staring up at his friends as he lies on the sand. They're saying something but he can't hear it. He can't speak, his eyes are portholes and he's trapped inside. Then he's gone, back to the broken liminal space.
The pokemon is approaching. Or is it? It doesn't seem to exist properly, a 2D form in a 3D space that only seems to grow in his vision. Ash looks down to see pikachu by his side, hair standing on end. They exchange a glance and he knows what to do.
The fight is a blur, each new opponent more incomprehensible and impossible than the last. As the final entity is destroyed. Ash falls to his knees, his mind shattered by the infinite cosmic chaos. The strange 'gym leader' begins to fade and the world starts to crumble to blackness. A bright light is shining. A voice emanates from all around. "Wake up ash you'll be late for school."
Ash opens his eyes and looks around, he is in bed. The world seems so much more detailed, so much more real. A handheld gaming device rests on his chest, white light flashes from its LCD screen as a pixelated title cutscene plays. A single word appears. PoKéMoN™